Mounting for motors and the like



ug- 27, 1935- l G. H. LELAND 2,012,687

MOUNTING FOR MOTORS AND THE LIKE K Filed Oct. 16, 1953 HS A rfb/WEPatented Aug. 27,Y Y1935 mounting for electric motorsr and theV like.andzis designed moreparticularlyfior.v that type of moe.

tor Which ismounted Wholly at one end.

'r When a motor frame or casing isrigidlyA secured toiawbase. or othersupporting structure-'the vibrationswhich' are setup inthe framel by theactionlof the rotor are transmitted to the supporting structure`l or`base and. produceva humming Ynoise which is. often seriouslyobjectionable, .particularly whenthemotor is'apart of atdomesticappliance or the like. l; .f r One'. object of the invention is toprovidesimple and*y durable means for sol mounting the motor frame onthebase as to prevent the Ltransmission of'vibrations 'to,the:baselg f fn :Arzifurther object of the .inlentionisuto Vso conf' l .structthemotor frame and base that a vibration absorbinglement may beinterposed between the same to, supportjthe frame'outof engagement Withfthe fr A further'object of .the invention is to provide a.mountingwhich iwill prevent any appreciable radial movement of thefrarnebut will yield'cir-VV cumferentially; of the frame( .Y v

-' lA further object of the invention is to provide amounting Yin whichthe vibration' absorbing elementwilllser've to locktheirame tothe base.

- `Other .objects of the invention will vappear as the apparatusisdescribed in detail. i f

- Intheiaccompanying drawing Fig. llis a sectional view of a motormounting embodying my invention, showing a portion of the motor frame inelevation; Fig.y 2 is. aV transverse sectionitaken onthe line 2---f2A ofFig. VV1 and partially ybroken away; and Fig.3`:isran enlarged crossVsectional view of the vibration absorbing element and portionsof@itspporting'A members. ,i

the'v drawing Iv have illustra-ted. oneernfv bodimentl'of theinventionbut'-git' will be under# stood' that: thisparticularembodiment, has been chosen for" the lpurposeof YillustrationVonly and thatllfthe tmounting may take various forms and may ybe;applied to motors or otherdevices of various kinds; Y, Y e v; l n YTh-motorherelshown isof a known construc-` tion and comprises'airame orcasingS in'which is "retatably mounted a rotor, the shaft 6 ronly of thertor'being' shown. This motor frame is mounted at one end Vonfa. base 1adaptedvltobe mounted onr a, suitable supporting structure 1w andAthe''lsl'laftv"extends through Vthis base.A In thev particularIarrangement 'Whichf has been Seleeted for me 'purposefof illustrationthe motorl is' supported-at one end 'only and is so"`mounted on'fasinglesupp'oltirigr member'i orf base that itV may bsupportedtlierebyeitherV a vertical positi'nfor a horizontal position land will be held''against ilygdispleement with 'reltionto said supporting-inember- Forthis purpose theisup!i Y 12,012,687 t L MOUNTING FoRMo'ronsgAND Teatina@'I hall? to The Leland .vElectricCoxnpa' e l 0h1o,aeorporationof Ohio linvention relates to. agvibration absorbing pcnjtiig`f'rnex'nber-isffpro arhelicl spring` l 2; the r coils of-QwhiehT are :offia Y I"diameter slightly greater-than ftl'refcombined Y new In the,particularoonstruotionhere,'illustrated ther basel l is;` providedlwithan iannulan `iiangel` extending?towardzthefmotor frame .and formingwithin the, samela circular rfe'cess 4which is `adapt@ ed to receiveVthe a endlportion `.of fa.,motorframe. The. motor .frame t is infthe;presentirlstarnpe protvided with an end portion Qrof redueedT diameteadapted to'extend l, vvithin, the airlgefli` thus. ablingtheexterior',surfaces'ofi the'ifla the body-,of theframe to` b tally'-nueh; frame @is 'circular c slightly n. less, than the formed by..thefilange Opening Or rebesls t' end; ,excseptwfQ-,IfXiendSt-Qrlly-Parltl t Y Y f will be obviousthat'thisls immate tthe-supporting minbefand its recess ma be the frame and' thejinnersurface 'of "the an'ge' tending cireilnferr'ltially thereof andfaaptreceive an'YK elongated; vibration vabsorbi-n'g element; finis'vlbrating assorti' g element 'of v su'eijf character'thatwhe'n"rnnintedV the "gro'vsitr will support the motor frame out of.engag' nt with the base laadgrwillpermitirle substantie dial movement?'of tlie 'frame'but will ,yield cir` cilmferentiallyA to v absorb t'h Yui'rlfefentiaiviet bfa'tiil's f thefreinety A ratio-ri absorbing'elemhtisf 4"af diameter? n yv lightly less than'thwidth ofthe' groovesso that'fitwill v nt snugly within the sameand'will holdthe motor frameagainst axial. movemntwithfrlation 'to 'chef-baise", l*thereby"preventing the ibody of )the framefror moving into engagementVwithftlle outer edge" of tlleflange andrpreventinglthtreibt-beingwithdrawn ironitherecess Y erably the vibrationabsorbing;elementcomprises 'l depth `of then groovesvl and;- l l-, sothatwhen. inserted-*in the :grooves the. springwill support the yfmotorzframe outof engagement with-,thelv flange. The coils are 'of-2;suelrstifEness Verselyg that 'they-willi` haves` l' yvers'efyielding movement', anc-will--theref -v'ent'anyz substantialradial imovementfo f g he el; Y

' frame with relation to therbase. The-spring ts snugly Within thegrooves and thus serves to lock the motor frame against axial movement.The coils ofthe spring maybe spaced short distances apart to facilitatethe longitudinal yielding of the spring. which enables it`to absorbe-thecircurn-r;

ferential vibrations ofthe lframe.l y

In assembung the mounting'itheireduced'end portion of the framerisplaced within the flange.

and supported therein while wthespri'ngyis ninserted lengthwise'into thegroove, the ange being provided with an opening `173A torper'mit thespring vto be so inserted in thegrooves.v When the spring has beenproperly positioned in the grooves the. Y ends .thereofare, anchoredtothe frame' at points adjae'ntone to the otherffhs there shown, pins jlVarefmounted `in thejframe radjacent to the opening,I3jfofvgthe-,flangeand -the'endsof the spring'- are provided with loopsor eyes'v 5 to engage these pins or `anchoring devices randfhold thespring against longitudinal'movement in the grooves. While the' ends ofthe Vspring might be connected *directly one toftl'ie other VI prefer toanchor them to, 'the' Yframe 'as Vabove*explained because in thismannerthe springis held against creeping movement Yinlhe groove? .and a.more 'satisfactory operation 'is had, 'lIt is: desirable that the springshould vbe confined in. grooves under a slight, longitudinal;A tensionsuiient -to sepa-,-Y

r'atethe coils thereofand litis 4therefore of such 'a'character thatwhencontracted it Will' be ofV a' length slightly less than theVcircumferential distance betvveentheipins l5; When the spring hasbeen-insertedin the grooves the rear end .thereof is anchored on oneV ofthe pins and theA loopat the'l other or`.forw`ard Yencl'of the. spring YY isfengaged by1af Vsuitablein iplement, such asa Y hook, Vand thespring. stretched `,to Venable'vs'aid end to be'connectedwith the'othe'r,pinjll i. When the spring is so Amounted the coils :thereof l will havelittle or no slipping movement in `the grooves ,b 'ut` thecircumferential vibrations of .the frame v will causetheinner sides ofthe coils,vvhich .are

engaged by the frame,r to^emove therewith and to fulcrum abouttheoutersides of AtheV coilswhich are-fin contactl with the flange fof' thebase. This rocking movement of the coils isf-ofcourse, resisted by theresilienoycf 'the spring and-fthe .Spline vis thusgcausd; tOebS/Orb allor, substan Vtiflly` allf'oflthe vibrations. ofthe Vframeand thusvprevent those; Vvibrations,frorngbeilig transmitted 'tions' fof theframe but will absorb f those' vibrai "io tions andprevent theirtransmission to the base.v

Furthen'the vspring will hold the frameagainst" both 'axial 'andk radial'm'ovement jwith" relation to'lth'ebase Va'ndfvvhen the `m'otorfismounted on a"hoiizontalf`axis 4vvill supporty thefralne against tiltingmovement on the base.-

"-VyhilelI-have Vsnhovvnandhdesc'ribed one embodi- Yment of my invention-Ilvishlitito be understood that: do' not desire to' be 'iiinitedto theldetails thereof as various modifications may occur to a person skilledin the art.

Having nowfully described my invention, what Iclaim as new and desire'to"secure by Letters Patent, is:

' A1. In a mounting for a motor or the like comprising a frame and arotor mounted therein, a

supporting member having a circular recess, said frame having a circularend portion extending into said recess, said'portion of said frame andthe annular wall of said recess having their adjacent surfacessubstantiallyY parallel with the axis ofsaid rotor, saidparallelsurfaces being pro-` vided `between their ends With opposedcircumferential grooves extending about the same, a. vibration'vabsorbing element mountedlinsaid grooves .and extending aboutsubstantially. the entire. circumference if/.said portion rof saidframe, said Wall of saidrecesshaving an opening through which saidrelement may be inserted lengthwise into said grooves, .and said elementbeing fof a 'thickness greater than the combined depthVr of 4saidgrooves, being .substantially unyieldable` transversely to its length.and being yieldable in the direction of its length."

"2.Ina.mountingfor a motor. or the like comprisingv a frame and a rotormounted therein,.a base having'a circular =reces's,said frame havingacircuiar Lend .portion arranged Within said recess, said portionlofsaid'frameand the wall `of, said recess `having opposed circumferentialgrooves, a helical spring fitted in said groovesto absorb torsionalvibrations and to hold said frame against axialmovement with relation'tosaid base,

' and Ameans for holding saidfspring against creeping movement in saidgrooves and for maintaining a longitudinaltension on said spring.; r

3. In a mounting for a motor orthe'like comprising a; frame "and a rotormounted therein, aY

base having a circular recessgsaid frame having a circular endv portion:arranged within said recess, said portion of said framer and the Wallof said recessV having opposed circumferential grooves, a helicalspringfitted-inr said grooves to absorb torsional vibrationsv andv to holdsaid frame against'iaxial movement with relation to said-base,anchoring'devices` mounted adjacent oneto the other on said portion ofsaid frame and Vadaptedlto 'engage Vthe respectiveends of saidspringQ'said devices being spaced Vapart a. circumferentialdistancegreater than the length of .said springiwhen it is contracted.

4. In a mounting for amotor or the like comprisinga frame and a rotorrmounted therein, a base Jhaving 'an Aannular"iiange, said `frame havinga circumferential end portion arranged within said flange, said portionof `said frame and said flange: having opposed circumferential grooves',lahelical'sp'rin'g tted fin said grooves to absorb torsional vibrationsand to hold said yframe against axial' movement with relation to saidbase,

said'iiange having an opening to permit said spring to be insertedlengthwise into said groove, and-anchoring devices mounted on vsaidframe adjacent to.Y said openingfand connected with the respective endsof' saidspring. 4- 5. Ina mountingv for a motor or the like comprising aframe and a'rotor, mounted therein,Y Ysaid` frame` having `a part tocooperate with a supporting' structure, a supporting structure having aApart extending about said part of said frame and constituting the solesupport therefor, said 'IllA parts having" opposed circumferentialgrooves, an

elongate vibration absorbing elementV fitting snugly: in said groovesand of a thickness slightly greater thanthe combined depth of saidgrooves,

said vibration absorbing elementbeing longitudi- Y nally yieldable toabsorb -torsional vibrations of said frame and being substantiallyunyieldable transversely to its length to support said framerout ofengagement with said supporting struc# ture and to hold the same againstbodily displacement with relation to said 'supporting structure.

6. In a mounting for a motor or the like comprising a'frame and a rotormounted therein, a

supporting member havingV a circular opening, said frame having acircular exterior portion mounted in said opening and spaced a shortdistance from the annular wall thereof, said portion of said frame andsaid annular wall of said open- .ing having their adjacent surfacessubstantiallyv parallel with the axis of said rotor, said parallelsurfaces being provided between their ends with opposed circumferentialgrooves extending about the same, an elongate vibration absorbingelement mounted in said grooves and extending about substantially theentire circumference of said portion of said frame, said element beingof a thickness greater than the combined depth of said grooves and beingresiliently yieldable in the direction of its length and substantiallynon-yieldable transversely to its length, whereby saidv element willabsorb torsional vibrations of ysaid frame and will hold said framelagainst bodily displacementwith relation to said supporting member. Y

'7. InaI mounting for a motor or the like comprising a frame and a rotormounted therein,.a

supporting member having a circular opening, said frame -having acircular exterior portion mounted in said opening and spaced a shortdistance from the annular wall thereof, said portion of said frame andsaid annular wall of said opening having their adjacent surfacessubstantially parallel withl the axis ofv said rotor, said parallelsurfaces being provided between their ends with opposed circumferentialgrooves extending about the same, an elongate vibration absorbingelement mounted in said grooves and extending about substantially theentire circumference of said portion of said frame, said element beingof a thickness greater than the combined depth oi'Y said grooves andsaid annular wall having an opening through which said elementmay beinserted lengthwise into saidgrooves..

8. In amounting for a motor or the like comprising a frame and a rotormounted therein, a supporting member having a circular opening,

said frame having a circular exterior portionY mounted in said openingand spaced a short vdistance from the annular wall thereof, said portionof said frame and said annular wall of said opening having theiradjacent surfacesV substantially parallel with the axis of said rotor,sai-d parallel surfaces being provided between their ends with opposedcircumferential grooves extending about the same, an elongate vibrationabsorbing element mounted inV said grooves and extendingVA aboutsubstantiallythe entirecircumference of said portion of said frame, saidelement being of a thickness greater than the combined depth of saidgrooves an-d being resiliently'yieldable in the direction of -its lengthand substantially non,- yieldable transversely to said length, and meansfor maintaining a longitudinal tension, on said element.

9. In a mounting for a motor or the like comprising a frame and a rotortherein, a supporting member havingl an annular portion substantiallyconcentric with the axis of said rotor, said frame having a circularexteriorportion extending into the annular portion of said 'supportingmember,

said portion of said frame and said annular porl' f vtion of saidsupporting member being spaced a;V

short distance apart and having opposed circum-V ferential grooves, anelongate vibration'` absorbing element mounted in said grooves andextending about substantially the entire circumference of said portionof said frame, said annular portion of said supporting member beingprovided with an'opening through which Vsaid element may be4 Y' insertedinto said opposed grooves, and said ele` 15v -bined depth of saidgrooves, being substantially ment being of a, thickness greater than thecomnon-yieldable transversely to its length and being yieldable in thedirection of its length.

l0. In a mounting for a motor or the like comprising a frame and a rotormounted therein, a supporting member'having Va circular opening, saidframe having a circular exterior portion mounted in said opening andspaced a short distancey from Ythe annular Wall thereof, said portion ofsaid frame and said annular wall of said open-V prising aY frame and arotor mounted therein, a

supporting member having a, circular opening,

said frame having a circular exterior portion y mounted in said openingand spaced a short distance from the annular wall thereof, said portionof said frame andV said annular wall of said open- Ving having theiradjacent surfaces substantially parallel to the axis ofsaid rotor,saidparallel surfaces being `provided between their ends with opposedcircumferential grooves approximately semi-circular in cross section, ahelical spring mounted in said grooves, said spring being of Vadiameterv slightly greater -than the combined depth of said groovestosupport said portion of said frame out of engagement with said annularwall of said opening,1and 'means for connecting said spring to one o fsaid grooved parts to prevent the same from creeping.v f

12. In a mounting fora motor or the like com# nected with one end onlyofsaid frame and constituting the sole lsupport therefor, said'supportingstructure having an opening and s aid frame havingr a part extendinginto said opening,l the wall Aof saidopening and said part of said frameyhaving opposed grooves, and a vibration absorb'- 'ing element mountedin said grooves, said element being yieldable in the direction"y of itslength and substantially non-yieldable transversely to its lengthandlbein'g seated snugly in said grooves to retainsaid part of saidframe in said recess and to holdrsaidframe Vagainst axial or tiltingmovement with relation to said supporting structure. f Y 'Y Y GEORGE H.LELAND.v

Vprising a frame and aV rotor ,mounted in vsaid f frame for rotationabout a substantially Yhorizontal axis, an upright supporting structurecon-

